Combined typewriting and computing machine



F. A. HART COMBINED TYPEWRITING AND COMPUTING MACHINE April 15, 1930.

2 SheetsSheet 1 Filed Jan. 19, 1926 IN VEN TOR ATTORNEY April 15, 1930.F. A. HART COMBINED TYPEWRITING AND COMPUTING MACHINE 2 Sheets-Sheet 2Filed Jan. 19, 1926 INVENTOR ATTORNEY 8 HEESWE E: 53;:

WITN ES 5 ES Patented A r. 15, 1930 UNITED STATES PATENT orrlcr-zFREDERICK A. HABT,. OF NEW BRITAIN,

coNNEorIoor, ASSIGNOR r0 REMINGTON" ACCOUNTING MACHINE CORPORATION, OFNEW YORK, N. Y., A CORPORATION 01' NEW YORK COMBINED TYPEWBITING ANDCOMPUTING MACHINE Application filed .Tanpary 19, 1926. Serial No.82,273.

My invention relates to combined typewriting and computing machines andit has for its principal object to provide certain improvements in theclearance proof mechanism of such machines.

To the above and other ends my invention consists in certain features ofconstruction and combinations and arrangements of parts, all of whichwill be fully set forth herein and particularly pointed out in theclaims.

My invention at least in part is in the nature of an improvement on ormodification of that described in the patents'to Poole 1,483,- 67 9dated Feb. 12, 1924, for combined typewriting and calculating machine,and No. 1,491,167, April 22, 1924, for calculating machine. Each of saidpatents shows a Remington accounting machine equipped with clearanceproof mechanism for the cross footer, the construct-ion being such thatwhen the carriage steps out of that particular computing column in whichthe cross footer should be brought to zero the step of the carriage tosub-units position of such column trips off a device which locks thenumeral keys against further computing operation. At that same step ofthe carria e the cross footer carriage is tripped off and umps back tonormal position. A finger in the cross footer is so disposed andcontrolled that if said totalizer has een brought to zero said fingerwill, during the jump-back of the carriage, immediately restore thelocking device to its normal unlocking position; but if the crosstotalizer has not been cleared then the said device will remain inlocking position. The lock employed in the Poole patents is of such acharacter that it operates only on the numeral keys and on them only incomputing columns.

By the present invention I have provided means whereby a device which istrlpped off at a suitable point in the program of operation of themachine operates a lock which looks not only the numeral keys of thetypewriter but the letter keys as well, and the effectiveness of whichdoes not depend on the position of the carriage at the time when theoperator seeks to use the keys. I have also modified the trippingmechanism so as to make it work twice in each back and forth Oneembodiment of my invention is illustrated inthe accompanying drawings,all of which are more or less fragmentary so as to show only those partsof the machine that are necessary to an understanding of my invention.In said drawings,

Figure 1 is a front elevation.

F lgure 2 is a right-hand side elevation with parts 1n section alongtheline 22 of Fig. 1.

Figure 3 is a plan'view with parts in sect1on.

Figure 4 is an enlarged perspective View of parts of the mechanism asviewed from the right-hand side of the machine and looking toward thefront of the machine.

Figure 5 is a side elevation, partly in section and partly broken away,of the cross totalizer and some of the associated parts.

My invention is here shown applied to an accounting machine of the sortdescribed in the patent to Wahl, No. 1,270,471, June 25, 1918,Calculating machine.

The machine shown in the drawing comprises a Remington No. 12typewriter, the frame of which includes among other things a basecasting 10 and corner posts 11. It also includes printing key levers 12for printing letters, numerals and other characters, these being pivotedat their rear ends and near their forward ends guided by a comb plate13. Each of said key levers is operatively connected with a type bar 14adapted to print against the front face of the platen, conventionallyillustrated in Fig. 3 at 15. Each of the key levers 12 has projectingupward therefrom a hook 16 and a locking bar 17 having ears pivoted at18 to the base casting 10, has a flange 20 which normally stands asshown in F' 2 where it is clear of the hooks 16 but w ich can be swungrearward under said hooks so as to lock the ke levers againstdepression. In the ordinary emington typewriter the bar 17 and books 16are parts of the line lock mechanism but in the present case I utilizethem as parts of my clearance proof mechanism. The bar 17 is held in itsnormal forward position by means of a spring 21 connected to said barand to a stationary cross piece 22.

The computin mechanism comprises an actuator, the mam frame piece ofwhich is a casting 23 which is secured by two screws to the top plate ofthe typewriter. The actuator framework also includes certain forwardlyprojecting frame plates of which the extreme right-hand one is shownin-the drawing at 24. Those of the key levers 12 which were adapted toprint numerals are connected into the actuator by means of verticallinks 25 which operate the actuating mechanism, the latter including avertical master wheel 26, Fig. 3, and a cross master wheel 27, Fig. 1.

A main truck 28 travels right and left with the typewriter carriage andhas mounted on it any desired number of vertical totalizers, three suchtotalizers 30, 31 and 32 being shown in the present instance.

The cross totalizing mechanism includes in addition the master wheel 27,a cross totalizer 33 mounted on a jumping truck 34 which by ballbearings travels right and left in a stationary rail 35 constitutingpart of the fixed framework of the computer. Each of the verticaltotalizers has a lug which is engaged by a pick-up bar 36, Fig. 1,pivoted at 37 to a bracket 38 on the cross truck 34. This bar is adaptedto be picked up by each vertical totalizer as the latter in its leftwardtravel approaches the computing column so that the cross totalizer 33 isdrawn across the master wheel 27 in unison with the travel of thevertical totalizer across the master wheel 26; and at the end of thecolumn the bar 36 is cammed loose and the cross footer is caused to jumpback to its normal right-hand position by means of a spring 40, Fig. 5.When the cross truck is drawn rightward by said spring it is arrested byan arm 41 (Fig. 1) projecting from the cross truck, striking a lever 42which is pivoted at 43 to the frame plate 24 and which is adapted to bepressed :1 short distance leftward by means of a spring 44. This leverhas articulated thereto a link 45 which controls the locking mechanismutilized in the Poole patents above referred to for proof ofnon-clearance.

The registering mechanisms of the Remington totalizers each includes aseries of car rier wheels 46 (Fig. 5) which are adapted to mesh with themaster wheel, a series of idler or transmitting pinions 47 meshing withthe wheels 46 and a series of ten-toothed dial inions 48 each havingfixed thereto a dia 50,

said dials showing through the sight-opening in the casing of thetotalizer.

The clearance proof mechanism includes a feeler comb 51 pivoted at 52inthe side walls of the cross totalizer 33, said comb including a seriesof thin teeth, one extending into the plane of each of the pinions 48.Each of said pinions has one tooth 53 made shorter than the rest, andthis tooth is so located that when all of the dials stand at zero all ofthese short teeth register with the comb 51 which under those conditionscan be swung further toward the front of the machine than it could ifsome one or more of said dials displayed another numeral than zero. Inthis latter event one of the long teeth of the pinion 48 would registerwith a tooth of the comb 51 and hold said comb further rearward than isshown in Fig. 5.- The comb 51 has fast thereto an arm 54 articulatedwith an arm 55 of a bell crank which is pivoted on a frame rod '56 ofthe totalizer. Said bell crank has also a vertical arm which extendsupward and projects through a slot in the top casing plate of thetotalizer, constituting a finger 57. spring 58 is connected with the arm55 and acts to press the feeler comb 51 against the pinions 48 and tendsto hold the fin er 57 in the rear position shown in Fig. 5. aid fingercan occupy said rear position only when the totalizer is clear. In theevent that some one or more of the totalizers does not stand at zero along tooth of one or more of the pinions 48 will hold the feeler comb 51rearward, causing the finger 57 to stand forward of the position shownin Fig. 5.

The mechanism for cooperating with the finger 57 comprises a lever 60pivoted at 61 to a frame plate or sheet metal bracket 62 which brackethas a forwardly bent portion which is secured to the end of the casting23 by the same screws 63 (Fig. 1) which secure the frame plate 24 tosaid casting. The bracket 62 and the lever 60 and the other partsmounted on said bracket occupy a position to the rear of the casting 23and in Fig. 1 said casting has been merely outlined in broken lines soas not to conceal this mechanism.

The lever 60 includes a leftward extending horizontal arm from the endof which an ear 64 (Figs. 3-5) is bent ofl horizontally rearward andsaid ear has in it a notch which embraces .a depending portion 65 of thebracket 62 to guide the lever 60 in its up and down motion.

The horizontal arm of said lever 60 has a bar 66 fixed thereon andspaced forward therefrom and parallel thereto by means of posts 67 andscrews 68; and when the cross truck is in its normal right-hand positionthis bar 66 lies directly over and rests on the bar 66 is preferablrounded and inclined to form a cam ed 0, Fig. 1,so that in case the bar66 be in its lower position when the cross footer jumps back to theright, then if said cross footer is clear the finger 57 engaging withthis cam edge 70 will restore the bar 66 and the lever 60 to the normalupper position shown in the drawing.

As shown in the drawing the bar 66 has a shelf bent forward horizontallyfrom its upper edge to which at 71 is pivoted a lever 72. A spring 73connected to said lever and to an ear 74 of the bar 66 tends to swinsaid lever clockwise in Fig. 3, its motion Ieing limited by a lug 75thereof, striking the lever 60. Near its left-hand end the lever 72 isformed with a projection 76 extending first downward and thence bentrparward, the rearwardly directed part being made of V- shape, formingtwo inclines 77, adapted under certain conditions to act cam fashion onthe finger 57. When the lever 60 is in its upper position shown in thedrawing, the cam edges 77 stand higher than the top of u the fin er 57,but when said lever is dropped to its coking position these cam edges 77stand in the path of said finger 57 and when on the jump back of thecross footer the finger 57 passes these inclines, then, if said fingeris in its forward position said inclines tend to force said finger toits rear position, pressing the feeler 51 forward against the pinions48, this pressure being derived from the spring 73.

The lever 72 and its cam inclined edges 77 are fully shown and describedin the patent to Poole No. 1,491,167 hereinbefore referred to, and theseparts have for some time constituted a portion of the Remingtonaccounting machine as regularly manufactured. They may be retained inthe present machine if desired and I have therefore shown them in thedrawing, but in some instances they may be omitted. In writin theparticular form or blank hereinafter escribed these parts arefunctionless and may therefore, and preferably will be omitted. I preferto utilize the tension of the spring 58, hereinbeforedescribed, tocontrol the feeler 51 and finger 57 In order to hold the lever 60releasably in its normal upper position shown in the drawing, said leveris constructed with an upwardly extending arm from which an car 80 isbent off toward the rear and said ear engages a notch in the end of thehorizontal arm of a latch lever 81 which is pivoted at 82 to the frameplate or bracket 62. Said latch lever 81. has a downwardl extending armto which is connected one en of a spring 83, the other end of which isconnected to the upright arm of the lever 60. This spring performs thedouble function of moving the latch 81 to its latching position and ofswinging the lever 60 counter-clockwise in Fig. 1 when said lever isreleased from said latch.

In order at the proper time to release the latch 81 the latter is madewith an upstanding arm against the edge of which a push rod 84 isadapted to act to rock the latch lever and release the lever 60. Theright-hand end of said ush rod is guided in an ear 85 bent forward fromthe plate 62. The push rod 84 extends leftward nearly to the middle ofthe machine where it is pivoted to an arm 86 of a bell crank which alsoincludes an arm 87, said bell crank being pivoted on a vertical stud 88mounted in a sheet metal bracket 90 secured by screws 91 to the casting23. The bell crank has its rear arm 86 on a lower lane than its leftwardarm 87, the two arms ing connected by a bail portion 92 so that the bellcrank is pivoted to the stud 88 at two points spaced apart. The stud 88projects downward from an upper horizontal shelf of the bracket 90. Aspring 93 tends to rock the bell crank counter-clockwise in Fig. 3.

The portions of the clearance roof mechanism thus far described excepttile bar 17 do not difier materially from those described in the Poolepatents hereinbefore referred to, and in fact so far as my invention isconcerned they -may be identical with the parts described in thosepatents.

In the Poole patents, however, the arm corresponding to the arm 87, hasa dog pivoted thereto for cooperation with a tripper mounted on one ofthe vertical totalizers and said dog is so constructed that when saidtriptherefore mounted on the arm 87 a rigid V- shaped projection 94which is adapted to be struck and pressed rearward by a tripper 95having an inverted V-shaped outline as indicated in Fig. 3, said tripper95 preferably being mounted on the top of one of the verticaltotalizers.

In order to lock the printing keys of the machine whenever the lever 60is in its lower position the following means are provided: a long leveror pivoted piece 89 is pivoted at 96 to the rear side of the casting 23,said lever 89 extending from its pivot rlghtward and having at its freeend an ear 97 bent forward from its lower edge and lying underneath theear 64 of the lever 60. Preferably the ear 97 is also notched as bestshown in Fig. 4 to embrace and be guided by the depending part 65 of theframe plate 62. Betweenits endsthe lever 89 has pivoted thereto a pushlink 98 grFigs. 1 and 2) extending downward thereom and pivoted to thelocking bar 17 at a oint forward of the pivotal axis of said lockmg bar.The construction is such that the sprin 21 normally holds the lockingbar 17 out o engagement with the hook 16 on the key levers and actingthrough the link 98 holds the lever 89 in its upper position with itsear 97 pressing upward against the ear 64 of the lever 60. But when thelatch 81 is tripped the weight of said lever 60, assisted by the tensionof the spring 83, is suflicient to deress said lever 60 and with it thelever 89, and the latter acting through the link 98 rocks the lockingbar 17 to locking position, thus preventing the depression of any of theprinting keys, and thus notifying the operator of the machine that thecross totalizer is not clear.

In order to illustrate the use and the mode of operation of myimprovement I have in Fig. 3 conventionally shown a form or blank 100mounted on the platen 15 in position to be written upon by the types 14.This blank or work sheet is of the sort used by some life insurancecompanies as a receipt for the premiums on their policies. The drawingdoes not show all of the printing and typewriting on this work sheet butshows enough to bring out the operation of the clearance proofmechanism. This work sheet or form would be inserted into thetypewriting machine with the aid of side edge guides so as always tocome in the same letter space positions of the typewriter. Undersuitable captions there IS a single line of writing, hereinafter calledthe principal line of writing, which includes all of the typewritingthat it is necessary to do on the sheet except the name and address ofthe policy holder. In the form, as shown, this line of writing includesthe number of the policy, the date when the premium is due and howpayable (whether annually, semi-annually or quarterly). Following theseitems in the same line of writing are three numbers, first, the statedamount of the premium, in the present instance $4A.10; next, the crediton account of dividend which the policy has earned, in this instance $3;and last, the amount paid, which is the difference between the premiumand the dividend credit, and which in the instance shown in the drawingamounts to $41.10. The three vertical totalizers 30, 31 and 32 are setrespectively to compute the three numbers above mentioned, or some orall of them may be'replaced by dummies. In other words, the totalizer 30defines the adding column in which the premium is written, 31 definesthe column in which the dividend credit is Written, and 32 defines thecolumn in which the amount paid is Written. Each of these amounts isregistered in the cross totalizer 33, the premium additively and theother two amounts subtractively. In the Remington accounting machine thedirection of rotation of, the cross master wheel 27 is controlled bycertain cams mounted on the vertical totalizers and in working on thisparticular form the vertical totalizer 30 would be equipped to causeaddition in the cross footer and the totalizers 31 and 32 to causesubtraction in said cross footer. When the premium is written it isadded in the cross totalizer. When the dividend credit is written it issubtracted in the cross totalizer, and when the amount paid is writtenthis also is subtracted in the cross totalizer. Since the premium shouldequal the sum of the dividend credit and the amount paid, the crosstotalizer will be cleared by the writing of the amount paid, providedall of the work on this particular premium has been correctly done. Ifthe cross totalizer is not clear after writing the amount paid then itshows that there has been an error somewhere and the operator isnotified of that fact by the locking up of the machine.

After writing the line above described the operators next duty is towrite the name and address of the policy holder in the space defined bythe frame marks 101. In the form shown in the drawing the first letterof the policy holders name is some distance to the right of the firstfigure in the policy number in the principal line of writing abovedescribed and some distance to the left of the column in which thepremium is written. In order to get the carriage in theposition to writethe policy holders name, therefore, it must of necesslty be drawnfurther back to the ri ht than the premium column, and will probably bedrawn clear back to the ri ht and tabulated down to the position of thefirst letter of the olic holders name. The tripper 95 is pre erab ymounted on the left-hand totalizer 30 corresponding to the premiumcolumn and in the position which -will be understood by referring toFig. 3. The position of the carriage is indicated by the pointer 102which is designed to co-operate for that purpose with graduations 99 onthe totalizers. It may be mentioned that the tripper 95 covers up one ofthese graduations which is, accordingly duplicated on its upper surface.In Fig. 3 the carriage is in that letter space position immediately atthe left of the premium column, and the tripper 95 is in engagement withthe right-hand incline of the cam projection 94. Motion of the carriageone step to the left of the position shown would operate the bell cranks87, 86 and trip off the lever 60. In drawing the carriage back to theright after writing the first line, including the amount paid, thecarriage would pass this point and trip off the lever 60. At that momentthe cross footer would be in its righthand position and if it was clearthe finger 57 would be standing under the bar 66 and would prevent thelatter from falling and locking up the machine. If on the contrary thecross footer was not clear, the finger 57 same thing would of course betrue for va rious locations of the tripper 95, it being only necessarythat it be so located that when the carriage is pulled back to the rightfar enough to write in the name of the policy holder this 1 trippershall act on the cam 94.

A location about such as shown is advantageous, however, for anotherreason. It is not only important that the cross totalizer be clearimmediately after writing the amount paid, but it is also important thatit be clear before writing the premium; It will be seen that by locatingthe tripper 95 in the position described it not only acts on the cam 94during the rightward travel of the carriage after writing the amountpaid, but it also acts on said cam again during the leftward travel ofthe carriage just before said carriage comes into the premium column. Ifever hin goes well and the machine is not ocke up the operator istherefore assured of two things, first, that the cross totalizer wasclear before she wrote the premium and second that it was clear aftershe wrote the amount paid and before she wrote in the name of the policyholder. In short, the tripper acts twice during each back and forthreciprocation of the carriage. This is the reason for making the cam 94ri id instead of using the pivoted dog employed eretofore.

The lever has a depending arm which has a finger piece 104 mountedthereon, which can be tapped by the finger of the operator to unlock themachine.

Various changes may be made in the details of construction andarrangements without departing from my invention.

What I claim as new and desire to secure by Letters Patent is:

1. In a combined typewriting and comgiving said lock a tendency to locksaid keys, and means in said cross totalizer acting to nullify'suchtendency in case said totahzer is clear.

3. In a combined typewriting and computing machine, the combination withprinting keys, including letter printing keys and numeral printing keys,a carriage, a register and a device which occupies one position whensaid register is clear and which occupies another position when saidregister is not clear, of a bar for locking said letter and numeralprinting keys, by direct engagement with the key levers, and meanswhereby said locking bar is controlled by said device.

Signed at the borough of Manhattan, city of New York, in the county ofNew York and State of New York this 18th day of January,

FREDERICK A. HART.

puting machine including a carriage and a cross totalizer arranged toregister numbers written across a wor sheet in a plurality of columns,clearance'proof mechanism inc uding a tripper part a part trippedthereby and means acting when said part is so tripped to test said crosstotalizer for clearance, one of said parts traveling with said carriage,said parts being constructed and arranged to test said cross totalizerfor clearance once durin the travel of, the carriage in letter feeddirection and once during the return motion of said carriage.

. 2. In a combined typewriting and computmg machine including letterprinting keys, numeral keys, a carriage and a cross totalizer arran edto register numbers written across a wor sheet in a plurality ofcolumns, clearance proof mechanism for said cross totalizer comprising alock for said letter and numeral keys, means controlled by the carriagefor III III

